#274 CreateTableQuery class enhancements

It is now possible to generate a query that selects the created table.

src/Carbunql/Clauses/CreateTableClause.cs

@@ -16,7 +16,7 @@ public CreateTableClause(TableBase table)
 
 	public bool IsTemporary { get; set; } = true;
 
-	public TableBase? Table { get; set; }
+	public TableBase Table { get; set; } = null!;
 
 	public IEnumerable<CommonTable> GetCommonTables()
 	{

src/Carbunql/CreateTableQuery.cs

@@ -1,4 +1,5 @@
-using Carbunql.Clauses;
+using Carbunql.Building;
+using Carbunql.Clauses;
 using Carbunql.Extensions;
 using Carbunql.Tables;
 
@@ -13,6 +14,8 @@ public CreateTableQuery(CreateTableClause createTableClause)
 
 	public CreateTableClause CreateTableClause { get; init; }
 
+	public string TableFullName => CreateTableClause.Table.GetTableFullName();
+
 	public IReadQuery? Query { get; set; }
 
 	public IDictionary<string, object?>? Parameters { get; set; }
@@ -58,4 +61,19 @@ public IEnumerable<CommonTable> GetCommonTables()
 		if (Query == null) yield break;
 		foreach (var item in Query.GetCommonTables()) yield return item;
 	}
+
+	public SelectQuery ToSelectQuery()
+	{
+		if (Query == null) throw new NullReferenceException(nameof(Query));
+
+		var sq = new SelectQuery();
+		var (_, t) = sq.From(TableFullName).As("t");
+
+		foreach (var item in Query.GetColumnNames())
+		{
+			sq.Select(t, item);
+		}
+
+		return sq;
+	}
 }

test/Carbunql.Building.Test/CopyTest.cs

@@ -12,18 +12,13 @@ public CopyTest(ITestOutputHelper output)
 		Output = output;
 	}
 
-	private string TruncateControlString(string text)
-	{
-		return text.Replace("\r", "").Replace("\n", "").Replace(" ", "").ToLower();
-	}
-
 	[Fact]
 	public void DeepCopy()
 	{
 		var sq = new SelectQuery("select a.column_1 as c1 from table_a as a");
 		var actual = sq.DeepCopy();
 
-		Assert.Equal(TruncateControlString(sq.ToText()), TruncateControlString(actual!.ToText()));
+		Assert.Equal(sq.ToText().ToValidateText(), actual!.ToText().ToValidateText());
 		Assert.NotEqual(sq, actual);
 	}
 
@@ -34,7 +29,7 @@ public void Serialize_SelectQuery()
 		var json = Serializer.Serialize(sq);
 		var actual = Serializer.Deserialize<SelectQuery>(json);
 
-		Assert.Equal(TruncateControlString(sq.ToText()), TruncateControlString(actual!.ToText()));
+		Assert.Equal(sq.ToText().ToValidateText(), actual!.ToText().ToValidateText());
 		Assert.NotEqual(sq, actual);
 	}
 
@@ -45,7 +40,7 @@ public void Serialize()
 		var json = Serializer.Serialize(sq);
 		var actual = Serializer.Deserialize(json);
 
-		Assert.Equal(TruncateControlString(sq.ToText()), TruncateControlString(actual!.ToText()));
+		Assert.Equal(sq.ToText().ToValidateText(), actual!.ToText().ToValidateText());
 		Assert.NotEqual(sq, actual);
 	}
 

test/Carbunql.Building.Test/CreateTableTest.cs

@@ -6,11 +6,11 @@ namespace Carbunql.Building.Test;
 
 public class CreateTableTest
 {
-	private readonly QueryCommandMonitor Monitor;
+	private readonly QueryCommandMonitor sq;
 
 	public CreateTableTest(ITestOutputHelper output)
 	{
-		Monitor = new QueryCommandMonitor(output);
+		sq = new QueryCommandMonitor(output);
 	}
 
 	[Fact]
@@ -22,7 +22,7 @@ public void CreateTable()
 		var ctq = q.ToCreateTableQuery("new_table");
 		ctq.CreateTableClause.IsTemporary = false;
 
-		Monitor.Log(ctq);
+		sq.Log(ctq);
 
 		var lst = ctq.GetTokens().ToList();
 
@@ -36,10 +36,34 @@ public void CreateTemporaryTable()
 		var q = QueryParser.Parse(sql);
 
 		var ctq = q.ToCreateTableQuery("new_table");
-		Monitor.Log(ctq);
+		sq.Log(ctq);
 
 		var lst = ctq.GetTokens().ToList();
 
 		Assert.Equal(15, lst.Count());
 	}
+
+	[Fact]
+	public void SelectQuery()
+	{
+		var sql = "select a.id, 'test' as value from table as a";
+		var q = QueryParser.Parse(sql);
+
+		var sq = q.ToCreateTableQuery("new_table").ToSelectQuery();
+		this.sq.Log(sq);
+
+		var lst = sq.GetTokens().ToList();
+
+		Assert.Equal(12, lst.Count());
+
+		var expect = @"
+SELECT
+    t.id,
+    t.value
+FROM
+    new_table AS t";
+
+		Assert.Equal(expect.ToValidateText(), sq.ToText().ToValidateText());
+
+	}
 }

test/Carbunql.Building.Test/StringExtension.cs

@@ -0,0 +1,13 @@
+namespace Carbunql.Building.Test;
+
+public static class StringExtension
+{
+	public static string ToValidateText(this string text)
+	{
+		return text.Replace("\r", "")
+			.Replace("\n", "")
+			.Replace(" ", "")
+			.Replace("\t", "")
+			.ToLower();
+	}
+}